| article html file updated | 6 February 2020 21:49 CET | Update | https://www.mdpi.com/1424-8220/15/8/20232 |
| article html file updated | 6 May 2019 13:23 CEST | Update | - |
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| article html file updated | 9 September 2015 11:48 CEST | Update | - |
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| article html file updated | 21 August 2015 15:38 CEST | Original file | - |
| article pdf uploaded. | 18 August 2015 09:46 CEST | Version of Record | https://www.mdpi.com/1424-8220/15/8/20232/pdf |
